EN 933-10-2009 en Tests for geometrical properties of aggregates - Part 10 Assessment of fines - Grading of filler aggregates (air jet sieving)《骨料几何性能试验 第10部分 精细评定 填充骨料分级(喷气筛)》.pdf

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1、BS EN933-10:2009ICS 91.100.15NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTests for geometricalproperties ofaggregatesPart 10: Assessment of fines Gradingof filler aggregates (air jet sieving)This British Standardwas published under theauthority of the Standa

2、rdsPolicy and StrategyCommittee on 31 August2009 BSI 2009ISBN 978 0 580 63831 2Amendments/corrigenda issued since publicationDate CommentsBS EN 933-10:2009National forewordThis British Standard is the UK implementation of EN 933-10:2009. Itsupersedes BS EN 933-10:2001 which is withdrawn.The UK parti

3、cipation in its preparation was entrusted to TechnicalCommittee B/502/6, Test methods.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its

4、 correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 933-10:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 933-10July 2009ICS 91.100.15 Supersedes EN 933-10:2001 English VersionTests for geometrical properties of aggregates - Part 10:Asses

5、sment of fines - Grading of filler aggregates (air jetsieving)Essais pour dterminer les caractristiques gomtriquesdes granulats - Partie 10: Dtermination des fines -Granularit des fillers (tamisage dans un jet dair)Prfverfahren fr geometrische Eigenschaften vonGesteinskrnungen - Teil 10: Beurteilung

6、 von Feinanteilen -Kornverteilung von Fller (Luftstrahlsiebung)This European Standard was approved by CEN on 12 June 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard withou

7、t any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language mad

8、e by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France,

9、Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG

10、Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 933-10:2009: EBS EN 933-10:2009EN 933-10:2009 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references . 4 3 Terms and

11、 definitions . 4 4 Principle . 4 5 Apparatus 5 6 Preparation of test portions . 5 7 Procedure 5 8 Calculation and expression of results 6 9 Test report . 7 9.1 Required data 7 9.2 Optional data . 7 Annex A (informative) Example of a test data sheet . 8 Annex B (informative) Precision . 9 Annex C (in

12、formative) Graphical presentation of results . 10 BS EN 933-10:2009EN 933-10:2009 (E) 3 Foreword This document (EN 933-10:2009) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national st

13、andard, either by publication of an identical text or by endorsement, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent righ

14、ts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 933-10:2001. This standard forms part of a series of tests for geometrical properties of aggregates. Test methods for other properties of aggregates are covered by parts of

15、 the following European Standards: EN 932, Tests for general properties of aggregates EN 1097, Tests for mechanical and physical properties of aggregates EN 1367, Tests for thermal and weathering properties of aggregates EN 1744, Tests for chemical properties of aggregates EN 13179, Tests for filler

16、 aggregate used in bituminous mixtures The other parts of EN 933 will be: Part 1: Determination of particle size distribution Sieving method Part 2: Determination of particle size distribution - Test sieves, nominal size of apertures Part 3: Determination of particle shape Flakiness index Part 4: De

17、termination of particle shape Shape index Part 5: Determination of percentage of crushed and broken surfaces in coarse aggregate particles Part 6: Assessment of surface characteristics Flow coefficient for aggregates Part 7: Determination of shell content Percentage of shells in coarse aggregates Pa

18、rt 8: Assessment of fines Sand equivalent test Part 9: Assessment of fines Methylene blue test Part 11: Classification test for the constituents of coarse recycled aggregate According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound t

19、o implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz

20、erland and the United Kingdom. BS EN 933-10:2009EN 933-10:2009 (E) 4 1 Scope This European Standard describes the reference method used for type testing and in cases of dispute for determining the particle size distribution up to 2 mm size of natural or manufactured origin filler aggregate using air

21、 jet sieving. For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established. NOTE A wet sieving procedure conforming to EN 933-1 can be used as an alternative method. However, t

22、his procedure is not applicable for mixed filler. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including a

23、ny amendments) applies. EN 932-2, Tests for general properties of aggregates Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates Part 5: Common equipment and calibration EN 933-2, Tests for geometrical properties of aggregates Part 2: Determination of

24、 particle size distribution Test sieves, nominal size of apertures 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 filler aggregate aggregate, most of which passes a 0,063 mm sieve 3.2 laboratory sample sample intended for laboratory testing

25、3.3 test portion sample used as a whole in a single test 3.4 constant mass successive weighings after drying at least 1 h apart not differing by more than 0,1 % NOTE In many cases constant mass can be achieved after a test portion has been dried for a pre-determined period in a specified oven at (11

26、0 5) C. Test laboratories can determine the time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used. 4 Principle The test consists of dividing up and separating, by means of a series of sieves, a filler aggregate into several

27、granular classifications of decreasing sizes. The aperture sizes and the number of sieves are BS EN 933-10:2009EN 933-10:2009 (E) 5 specified in 5.2. The test is in particular well suited for materials which when dry neither tend to agglomeration nor to electrostatic charge. The method adopted is dr

28、y air jet sieving. The mass of the particles passing each sieve is related to the initial mass of the material. The percentages obtained are used either in their numerical form or in a graphical form. 5 Apparatus 5.1 All apparatus, unless otherwise stated, shall conform to the general requirements o

29、f EN 932-5. 5.2 Test sieves, with round frame of 200 mm nominal diameter and square aperture sizes of 0,063 mm, 0,125 mm and 2 mm in accordance with EN 933-2. 5.3 Air jet sieving apparatus, (general form shown in Figure 1) with a pressure difference of (3,0 0,5) kPa across the sieve, during the test

30、 procedure. 5.4 Ventilated oven, thermostatically controlled to maintain a temperature of (110 5) C or other suitable equipment for drying the filler aggregate, if it does not cause any particle breakdown. 5.5 Balance, accurate to 0,1 % of the test portion mass. 5.6 Soft brush. 5.7 Plastic hammer (o

31、ptional). 6 Preparation of test portions Laboratory samples shall be reduced in accordance with EN 932-2 to produce test portions. The test portion shall have a mass of (50,0 1,0) g. Dry the test portion at (110 5) C to constant mass. Allow to cool, weigh and record as M1.7 Procedure Fit the 0,063 m

32、m test sieve onto the apparatus and transfer all of the test portion onto the sieve. After covering the sieve with the plexiglass lid, operate the air jet sieving apparatus until complete sieving is achieved. A minimum of 3 min is required. During sieving the pressure difference to normal air pressu

33、re in the air jet sieving apparatus shall be (3,0 0,5) kPa. NOTE 1 Any agglomeration of particles during sieving can be alleviated by tapping the plastic hammer at the centre of the plexiglass lid. NOTE 2 The sieving process is complete when the mass of retained material does not change more than 0,

34、1 % of the mass of the test portion during 1 min of this sieving operation. NOTE 3 In many cases sieving can be completed after sieving for a pre-determined time. Test laboratories can determine the time required to fulfil the requirements of Clause 7 for completion of sieving for specific types and

35、 sizes of test portions in the air jet sieving apparatus used. BS EN 933-10:2009EN 933-10:2009 (E) 6 692115124873110Key 1 Housing 7 Test portion 2 Dish 8 Oversize material 3 Sieve frame 9 Undersize material 4 Plexiglass lid 10 Air jet 5 Rotating slit-nozzle 11 Air discharge 6 Test sieve 12 Pressure

36、gauge socket, with dust hood Figure 1 Example of air jet sieving apparatus Determine the mass of material retained on the sieve including the filler aggregate brushed from the sieve mesh and record the mass as R1 to 0,1 g. Repeat the above procedure with the 0,125 mm sieve and then with the 2 mm sie

37、ve, using in each case the retained material from the previous sieve and record the masses retained as R2and R3respectively to 0,1 g. 8 Calculation and expression of results Record the various masses on a test data sheet, an example of which is given in Annex A. Calculate the mass retained on each s

38、ieve as a percentage of the original dry mass M1to the nearest whole number. BS EN 933-10:2009EN 933-10:2009 (E) 7 Calculate the cumulative percentage of the original dry mass passing each sieve down to the 0,063 mm test sieve. NOTE A statement on the precision of this test is given in Annex B. 9 Te

39、st report 9.1 Required data The test report shall include the following information: a) reference to this European Standard; b) identification of the sample; c) identification of the laboratory; d) cumulative percentage of the mass of the test portion passing each of the sieves to the nearest whole

40、number; e) date of reception of sample; f) sampling certificate, if available. 9.2 Optional data The test report can include the following information: a) name and location of the sample source; b) description of the material and of the sample reduction procedure; c) mass of test portion; d) graphic

41、al presentation of results (See Annex C); e) date of test. BS EN 933-10:2009EN 933-10:2009 (E) 8 Annex A (informative) Example of a test data sheet EN 933-10 Identification of the sample Laboratory : Date :Operator :Dry mass of test portion : M1= g Sieve aperture size Mass of material retained (Ri)

42、Percentage of material retained (Ri/M1)100 Cumulative percentages passing 100 (100 Ri/M1) mm g % % 2 R3 0,125 R20,063 R1(to nearest whole number) BS EN 933-10:2009EN 933-10:2009 (E) 9 Annex B (informative) Precision The following values have been obtained by a Dutch proficiency scheme using (10,00 0

43、,01) g test portions and (3,0 0,5) kPa pressure difference. Repeatability r = 3 % Reproducibility R = 3,5 % BS EN 933-10:2009EN 933-10:2009 (E) 10 Annex C (informative) Graphical presentation of results Y 0,063 0,125 2 X Key 1 cumulative percentage passing (%) 2 sieves of square aperture (mm) BS EN

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